Inflation can be one of the scariest forces in the economy. As prices rise and your dollar doesn't go as far, you feel poorer, and it's all out of your control. To better understand inflation, we turn to the story of Brazil, where, in the 90s, hyperinflation threatened to derail the whole economy until the country turned to a group of unlikely heroes: four drinking buddies. | Subscribe to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney. |At this Summer School, phones ARE allowed during class... Check out this week's PM TikTok! | Listen to past seasons of Summer School here.